03-26-2010, 09:19 PM
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#20 (permalink)
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A True Z Fanatic
Join Date: May 2009
Location: Hayward
Posts: 3,015
Drives: Nissan GTR
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Quote:
Originally Posted by 370Z JT
newb question, but are the resonated test pipe quieter than the high flow cats?
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HFC is more quieter.
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